Managed C++/CLI

Christian Graus30-Nov-06 22:18

30-Nov-06 22:18

It's funny, because you're posting in the wrong forum. There is a 'suggestions' forum.

I tend to agree in principle, but the fact is, I can't think of anything we can name this forum that will stop people from just seeing 'C++' and filtering out the bit they don't understand.

Christian Graus - C++ MVP

'Why don't we jump on a fad that hasn't already been widely discredited ?' - Dilbert

led mike1-Dec-06 4:19

1-Dec-06 4:19

Christian Graus wrote:
It's funny, because you're posting in the wrong forum.

Great way to start my day! Thanks

led mike

Bartosz Bien1-Dec-06 9:50

Bartosz Bien

1-Dec-06 9:50

Perhaps the only way it would work is Managed/CLI. Hard to swallow at first, but a good repellent to C++ newbies as well: two bits together that they don't understand. Cool | :cool:

Regards,
BB
http://spin.bartoszbien.com

George L. Jackson1-Dec-06 11:44

1-Dec-06 11:44

I have noticed that even bookstores such as Borders inconsistantly shelve C++/CLI books with C/C++ or C# or VB or even by itself (all this in the same store at times). I guess C++/CLI is just a bad name since it is causing so much caos. Anyway, Microsoft is also responsible for OLE, COM, COM+, ActiveX, etc.

Stone Free6-Dec-06 2:58

Stone Free

6-Dec-06 2:58

I think that the naming is one its greatest disasters. I am currently looking for a new job and would prefer if there was an element of C++/CLI, but it is virtually impossible to find a job spec that contains it. If you search for Managed you get back specs to do with being a manager and if you use the CLI keyword you often get Command Line Interface and other such acronyms.

There are vast Swathes of C Sharp jobs because C# is a really simple keyword to find that does not get confused for something else.

How is the use of C++/CLI meant to grow if programmers can't find jobs where it is being used!

George L. Jackson30-Nov-06 22:57

Accessing a List object in Mixed mode code.

30-Nov-06 22:57

There is a post at the top in red text explaining what this forum is for. But people don't manage to see (++) that.

kristmun30-Nov-06 4:09

kristmun

30-Nov-06 4:09

Hi guys,
here is my problem I have defined a list of managed objects in MyClass.h:

<br />
class MyClass.h<br />
{<br />
  public:<br />
  MyClass();<br />
  gcroot<List<MessageListener^>^> messageListeners;<br />
}<br />

and using the list in the .cpp file

<br />
MyClass::MyClass()<br />
{<br />
  messageListeners = gcnew List<MessageListener^>();<br />
}<br />
void MyClass::addMessageListener(u_short id,u_short version)<br />
{<br />
  MessageListener^ msgl = gcnew MessageListener(id,version);<br />
  messageListeners->Add(msgl);<br />
}<br />

...as you can see I'm trying to use a list of managed objects in an unmanaged class.
My problem is than I can't access the objects in the list

<br />
void MyClass::findMessageListener(u_short id,u_short version)<br />
{<br />
  <br />
  for(int i = 0;i<messageListeners->Count;i++)<br />
  {<br />
    MessageListener^ msg = messageListeners[i];<br />
    if(msg->id == id && msg->version == version)<br />
    {<br />
      return msg;<br />
    }<br />
  }<br />
  return nullptr;<br />
}<br />

I would like to have some comments on how this can be done.

Thx

Re: Accessing a List object in Mixed mode code.

led mike30-Nov-06 7:55

Re: Accessing a List object in Mixed mode code.

30-Nov-06 7:55

kristmun wrote:
gcroot<List<MessageListener^>^> messageListeners;

kristmun wrote:
MessageListener^ msg = messageListeners[i];

"messageListeners" is a gcroot template instance and does not have an operator []. You need to use the conversion operator ( operator T ) to get at the CLR List object before you can get to the indexer ([]).

MessageListener^ msg = ((List<MessageListener^>^)messageListeners)[i];

led mike

kristmun30-Nov-06 20:07

kristmun

30-Nov-06 20:07

Works like a charm!

Thanks Mike

Paragraph formatting in Windows::Forms::RichTextBox.

Bartosz Bien29-Nov-06 23:42

Bartosz Bien

29-Nov-06 23:42

Hello,

In MFC's CRichEditCtrl, I could set paragraph spacing (before and after) by using PARAFORMAT2. Is there a possibility of achieving the same functionality with .NET 2.0 RichTextBox in C++/CLI?

I've seen several enormous hacks on using PARAFORMAT2 in C#, but I believe it could be done more elegant in C++/CLI (using raw /clr, without safe or pure enforcement).

Or perhaps is there a more convenient method to format paragraph spacing without using native calls?

Regards,
BB
http://spin.bartoszbien.com

Verilog -> C++ (Verilator)

suguimoto29-Nov-06 6:10

suguimoto

29-Nov-06 6:10

Hello!

I'm trying to translate some codes from Verilog to C++ using Verilator.

As I could see, there are not many materials to search about it, and I'm getting a lot of errors during this process.

Anyone that works with or at least Verilog (VHDL) could help me?

Thanks a lot!

Re: Verilog -> C++ (Verilator)

Christian Graus29-Nov-06 12:27

Re: Verilog -> C++ (Verilator)

29-Nov-06 12:27

I think you're in the wrong forum, this is for C++/CLI, I think you want Visual c++.

Christian Graus - C++ MVP

'Why don't we jump on a fad that hasn't already been widely discredited ?' - Dilbert

George L. Jackson29-Nov-06 13:30

Re: Verilog -> C++ (Verilator)

29-Nov-06 13:30

Christian,

We need to change the name of this forum to "This Is not the Visual C++ Forum". OMG | :OMG:

Hmm. Never mind! If we did that, we will get an increase of unrelated posts. Sigh | :sigh:

Christian Graus29-Nov-06 13:48

29-Nov-06 13:48

I suspect a lot of people see 'visual c++' and assume MFC, and have no idea what 'managed' or 'CLI' means, so they just ignore it.

Christian Graus - C++ MVP

'Why don't we jump on a fad that hasn't already been widely discredited ?' - Dilbert

HylaFax server

mhmo29-Nov-06 1:49

mhmo

29-Nov-06 1:49

Dear all

My company has a fax server pool that contains 16 faxes cards. We are using the HylaFax software http://www.hylafax.org/content/Main_Page[^] Which written in C language.

Now that software is good in that when a fax is coming, it transfer it to the correct card (tha card that is specified for the recipt)... But, when we send a fax, it handles tha job to the next available card in the Queu (not nesesarly to be the card that is specified for the sender).

If anybody knows how to enhance this software so it sends the fax correctly(using the sender card) I will appreciate his/her help.

Or if you have an alternative solution that not expensive to use. I will also appreciate that.

Best Regards

Re: HylaFax server

Christian Graus29-Nov-06 12:28

GetByteArrayFromVariantArray

29-Nov-06 12:28

mhmo wrote:
Which written in C language.

Then you can't possibly modify it using C++/CLI. If you want to know how to change this code, your best bet is the Visual C++ forum, although even that is a long shot. You probalby want forums dedicated to users of this particular software.

Christian Graus - C++ MVP

'Why don't we jump on a fad that hasn't already been widely discredited ?' - Dilbert

weehau28-Nov-06 23:46

weehau

28-Nov-06 23:46

I am using visual c++ 6.0. I wish to use the COleVariant::GetByteArrayFromVariantArray member function
but the compiler generates error message : GetByteArrayFromVariantArray is not a member function of COleVariant. Why could this happen?? Is this function available only in VC++ 2005??

Is there any way to retrieve a byte array from variant array??
Thanks. I will appreciate any help from you.

Re: GetByteArrayFromVariantArray

Christian Graus29-Nov-06 0:02

System::String^ to const WCHAR* ?

29-Nov-06 0:02

weehau wrote:
I am using visual c++ 6.0

Then you're plainly not using C++/CLI. Try the Visual C++ forum.

Christian Graus - C++ MVP

'Why don't we jump on a fad that hasn't already been widely discredited ?' - Dilbert

Fritzables28-Nov-06 19:11

Fritzables

28-Nov-06 19:11

I am trying to write an app which requires me to convert a String^ to a WCHAR but not having much luck with a resolution.

Can anyone point out where I am going wrong ?

I'm using Visual Studio 2005 and it's a console application.

Pete

led mike29-Nov-06 5:39

29-Nov-06 5:39

Fritzables wrote:
Can anyone point out where I am going wrong ?

Just a guess but you are not using the documentation, examples and samples found on msdn.microsoft.com.

led mike

Fritzables29-Nov-06 10:59

Fritzables

29-Nov-06 10:59

G'Day led mike,

Well, ya could be right despite the fact I have tried a number of times creating different search strings in the hope I may find something that steers me in the right direction.

I am pretty new to C++ as I have recently come across from using Borland's Delphi, so I will use that as my excuse. Smile | :)

Pete

led mike30-Nov-06 5:12

Re: System::String^ to const WCHAR* ? [modified]

30-Nov-06 5:12

Fritzables wrote:
despite the fact I have tried a number of times creating different search strings

That is easy to believe. Keep at it though. Developing the "skill" to find information is a critical skill in our field. If this helps at all, I use Google to do my searching and when I expect that MSDN will contain the information I seek I put "MSDN" as the first keyword in the Google search phrase. I find that Google provides much better results than the MSDN search engine. But that's just me. Big Grin | :-D

Anyway using your question as an example my Google search string would be

MSDN System.String convert WCHAR

Try it out.

led mike

George L. Jackson29-Nov-06 12:50

29-Nov-06 12:50

I hope this example helps:

#include <iostream>

using namespace System;
using namespace System::Runtime::InteropServices;

int main(array<System::String ^> ^args)
{
String ^gcString = L"Hello, World!";
IntPtr intptr = IntPtr::Zero;

try
{
intptr = Marshal::StringToHGlobalUni(gcString);

const wchar_t *hgString =
static_cast<const wchar_t*>(intptr.ToPointer());

std::wcout << hgString << std::endl;
}

catch (Exception ^e)
{
Console::WriteLine(e->Message);
}

finally
{
if (intptr != IntPtr::Zero)
{
Marshal::FreeHGlobal(intptr);
}
}

return 0;
}

-- modified at 19:20 Wednesday 29th November, 2006